Answer: Arginine and Lysine
Explanation:
Histones are protein that packs DNA into nucleosomes. It compose of Arginine and Lysine amino acids.
Lysine and Arginine are basic amino acids that aids the solubility of Histone in water and also aids the interaction of DNA and Histones.
The amino acids that are concentrated on the outer surface of histones and interact with the backbone of DNA are ARGININE and LYSINE, which are positively charged (i.e., they are basic amino acids).
In eukaryotic cells, Deoxyribonucleic acid (DNA) is tightly packed by its interaction with histone proteins. A nucleosome is the functional and structural unit of eukaryotic chromatin, which is composed of an octamer of histone proteins (two subunits of H2A, H2B, H3 and H4 histone proteins) and approximately 147 base pairs of DNA.The phosphate backbone of the DNA double helix is negatively charged because phosphate bonds between phosphorous atoms and oxygen atoms have a negative charge.In consequence, the tight wrapping of DNA around histones is due to the attraction between the phosphate backbone of the DNA molecule and positively charged amino acids of histones.In conclusion, the amino acids that are concentrated on the outer surface of histones and interact with the backbone of DNA are ARGININE and LYSINE, which are positively charged (i.e., they are basic amino acids).
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What species does the mosquito belong to?
Answer:
Insects
Explanation:
Answer:
flies (order Diptera). Within Diptera they constitute the family Culicidae
Explanation:
Which of the following statements about oxidative phosphorylation by ATP synthase is FALSE? A) The electrochemical gradient across the inner mitochondrial membrane generated by electron flow is used to synthesize ATP. B) Uncouplers dissipate the electrochemical gradient but electron transport continues without ATP production. C) Inhibitors disrupt electron flow as well as ATP synthesis. D) A proton gradient alone without a corresponding energy input is not sufficient to drive the synthesis of ATP. E) ATP synthesis occurs via simultaneous conformational changes in protein subunits containing catalytic sites.
Answer
D)A proton gradient alone without a corresponding energy input is not sufficient to drive the synthesis of ATP
Explanation:
Oxidative phosphorylation reffers to metabolic pathway whereby enzyme is used by the cell to achieve nutrient oxidation, so that chemical energy of molecular oxygen is released as a result of this, adenosine triphosphate (ATP) is manufactured. oxidative phosphorylation is seen in all organisms that are aerobic in nature and it occur in the mitochondria of all eukaryotic organisms. There is electron transfer during oxidative phosphorylation, the electrons moves from the donor to the receptor and this is known as redox reaction, as a result of this energy is released, and this energy is used for formation of ATP.
Therefore,among all the options, A proton gradient alone without a corresponding energy input is not sufficient to drive the synthesis of ATP is the false statement.
which species is the banana most closely related to?
lemon
onion
radish
seaweed
Answer:
onion
Explanation:
"Onions are most closely related to a) banana. Onions are part of the Amaryllidaceae family and bananas are part of the Musaceae family. They are both monocots, meaning the have one cotyledon, parallel leaf veins, and flower petals in multiples of three, among other distinctive characteristics. "
Answer:
Onions are most closely related to a) banana. Onions are part of the Amaryllidaceae family and bananas are part of the Musaceae family. They are both mono cots, meaning the have one cotyledon, parallel leaf veins, and flower petals in multiples of three, among other distinctive characteristics.
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Please give as brainliest answer!!
Thanks!
Explanation:
. Your lab technician was to determine the ash content of buttermilk by conventional dry ashing. The technician weighed 5 g of liquid buttermilk into one weighed platinum crucible, immediately put the crucible into the muffle furnace using a pair of all stainless steel tongs, and ashed the sample for 48 h at 800 °C. The crucible was removed from the muffle furnace and set on a rack in the open until it was cool enough to reweigh. (4 marks)
a. What errors were made in the preceding method (there were several)?
b. What were the likely results of these errors?
Answer:
Ashing process is done to evaluate the ash content present in petroleum or other proucts, so that they can be used for certain applications
The two major types of ashing process that includes dry ashing and wet ashing and can be performed using microwave systems or conventional means.
a. errors made in the preceding method while determining the ash content of buttermilk by conventional dry ashing are as following:
Buttermilk should not immediatly put into muffle immediatley, it should be boiled first to avoid splatter.Temperature should be between 500 to 600 degree celcius at high temperature teh ash content can be loss.The sample should be ashed for 12-18 hrs , more than this can damage the required ash content.platinum tip should be used in place of stainless steel because platinum has a lower concomitant tip impedance than stainless stell, so less reactive to ash.The ash should put in dessicator and not allow to kept in open because ash can react with the humidity in teh atmosphere.b. The result that occur due to above errors such as the temperature, time, tongs and leaving ash in open will manipulate the final ash content and its application can be harmful for humans and for other purpose if it will be used.
There is little food available in ecosystems found near polar ice. True or false
Answer:
false
Explanation:
edge 2021
The immunity rate is the ____________ variable. The number of people affected by the disease is the ___________ variable.
Answer: 1. independent , 2 . dependent
The immunity rate is an independent variable. The number of people affected by the disease is the dependent variable.
What is immune system?
The immune system protects our body from foreign invaders like bacteria, viruses, and fungi, and other toxins.
In general 2 types of the immune system observed in human body.
The innate immune system rapid inheritable response system consist major organs like skin, the eye's cornea, and the mucous membrane that lines the respiratory, gastrointestinal, and genitourinary tracts.
Secondly, the acquired immune system work with the innate system to make a special proteins named antibodies to protect our body from a specific invader.
Human immune system show variation in their production of immune components like cytokines play critical roles and it vary from person to person.
Hence, The immunity rate is an independent variable. The number of people affected by the disease is the dependent variable.
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BTW I NEED THIS ASAP what words can i add to make a word with trait variation?
Answer:
artist, strait, air, art, at...
Explanation:
Study the diagram. What is forming in the diagram?A) a front. B) a hurricane. C) a thunderstorm. D) a tornado. (HURRY)
Answer:
Hurricane
Explanation:
Hurricanes form over the warm Atlantic ocean.
Hurricanes have a Low pressure center, which is known as the eye of a hurricane.
Within a population of butterflies, the color brown (B) is dominant over the color white (b) and 32% of all butterflies are white. Given this simple information, which is something that is very likely to be on an exam (teehee), calculate the following:
1. The percentage of butterflies in the population that are homozygous dominant
2. The number of heterozygous butterflies if the population contained 4,216 individuals
Answer:
48% Heterozygous of the population, 12% Homozygous dominant size.
Explanation:
Given the characteristics of its population,
Brown (B) predominates over white (b) color.
Recessive phenotype frequency (Q)= 40%= 0.4
According to the Hardy-Weinberg principle, the frequency is given by P and Q for a population with the dominant and recessive trait, where P+Q=1 preserves the equilibrium of the population allele.
So then, P = 1-Q
P=1-0.4=0.6
Heterozygotic butterflies = 2PQ
So, 2PQ= 2x0.6x0.4=0.48
That is, 48 percent of people are heterozygous
Homozygous dominant individual frequency = 1-(40 + 48) = 12 i.e. 12%
Answer:
C. 0.48
Explanation:
Select all the following that describe isotopes of an element
_ Different numbers of neutrons
_ Different mass numbers
_ Different atomic numbers
_ Different numbers of protons
Answer: different number of neutrons and different mass numbers
Explanation:
The statements that describe isotopes of an element are:
Different numbers of neutrons.Different mass numbers.What is an isotope?An isotope is defined as varieties of atoms that have the same atomic number and therefore constitute the same element even though they have different mass numbers.
Characteristics of an isotope of an elementAtoms that are isotopes of each other have the same number of protons in the nucleus.They are found in the same place within the periodic table.Therefore, we can conclude that the isotopes of an element are atoms with the same atomic number but different mass numbers.
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Replanting trees on a bare hillside is an example of
(A) conservation and afforestation
(B) preservation and conservation
(C) restoration and preservation
(D) reafforestation and restoration
Answer:
(D) Reafforestation and restoration
Explanation:
Replanting trees in helping to "re-forest" the hill and restore it to how it was before.
Replanting trees in a place where trees used to exist is an example of reafforestation and restoration.
Afforestation means to create a forest (trees) where they do not exist before.Reafforestation, on the other hand, means to create a forest (by planting trees) to an area that used to be a forest but has been removed due to one reason or another. Similarly, restoration means restoring an area to what it used to be. Forest restoration is the practice of restoring a forest that has been modified by natural or anthropogenic processes to its old self.Thus, replanting trees on a bare hillside is an example of reafforestation and restoration.
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Plants also have organs that are made up of different tissues working together. Which is an example of a plant organ?
Select one or more:
a. leaf
b. shoot system
c. chlorophyll
d. root system
Answer:
b. shoot system
Explanation:
the shoot system connects all the different parts of the plant (leaves, stem, roots) and helps move the water and minerals throughout the plant. Hope this helps and is right, I'm pretty sure it is but I could be wrong :)
Plants and other producers make their food using photosynthesis
O
O
True
False
Answer:
True
Explanation:
explain the process (reflex action) that happens when you pull your arm away from an open flame. use steps to explain your answer. identify the receptor in the skin, the stimulus, the neurons,the effector(muscle) and the body's response to the stimulus.
Answer:
A reflex action is defined as an involuntary action of body in response to a stimulus, which protects the body from any harmful conditions including touching open flame.
A reflex action follows a sequence of action that helps in involuntary action, tha include the stimulus, receptor in the skin, the neurons (sensory, relay and motor neurons), the effector(muscle) and resposne of body to stimulus.
In the reflex action when a person pull his/her arm away from an open flame, the stimulus will be the hot flame that send a signal to the nervous system.
The sensory receptor found in the dermis or epidermis of skin called cutaneous receptors, senses the temperature change.
Then the sensory neuron comes in action which sends electrical impulses to a relay neuron (located in spinal cord) and relay neuron sends impulse to motor neuron.
Motor neuron sends that electrical impulses to a muscle which act as an effector which allows muscle to contracts to move hand away.
So, at the end the body resposnes to move hand aways from the open flame.
What is the comparison and the differences between the structures of the stomach and the pancreas?
Answer:
Explanation:
The chyme produced from the stomach is highly acidic in nature; the pancreatic juices contain high levels of bicarbonate, an alkali that neutralizes the acidic chyme. Additionally, the pancreatic juices contain a large variety of enzymes that are required for the digestion of protein and carbohydrates.
what is a range of the lowest temperatures found at the top of the tropopause
Answer:
62°F (17°C) to -60°F (-51°C) at the tropopause.
Which type of cells contain dna
Answer:
Eukaryotic cell contains the genomic linear DNA
Explanation:
The equation AU = Q - W describes which one of the following?
O A. Second law of thermodynamics
O B. Efficiency of a heat engine
O C. Work done by a gas
O D. First law of thermodynamics
SUBMI
Answer:
D. First law of thermodynamics
Explanation:
The first law of thermodynamics refers that energy can be tranferred or changed form one form to another but it can neither be destroyed nor be created. hence, it is also known as law of conservation of energy.
The equation ΔU = Q − W describes the first law of thermodynamics.
Where
U is the internl energy of the system. ΔU is the change in U. Q refers to the total heat supplied into the system (include both addition and release of energy in the system). W is the net work done by the system.Hence, the correct option is D.
Answer:
Option D, First law of thermodynamics
Explanation:
The first law of thermodynamics states the following -
[tex]dU = Q-W[/tex]
where dU represents the Heat added to the System
Q represents the Change in Internal Energy OR net heat transfer OR sum of all heat transferred into and out of the system
W represents the Work done on the system
The first law of thermodynamics is based on the application of the conservation of energy principle to heat and thermodynamic.
hence, option D is correct
In your post, discuss ONE Neanderthal or Denisovan gene that is currently found within our species. Tell us about the gene and its function. Explain what it does for us. (Make sure you give a citation.) Explain in your own words any possible advantages that your Neanderthal or Denisovan gene might have. Make sure you give in informed opinion that is grounded in your research. Caution: Make sure that your chosen genetic variant is not simply a result of common ancestry. For example: FOXP2 is a gene that Neanderthals and Sapiens share because of common ancestry. Verify that the genetic variant that you are looking at is actually derived from Neanderthals, Denisovans or another species. You will have to respond to two other student posts. Make sure you cite your work.
Answer:
It has been shown that many microRNAs (miRNAs) were differentially expressed in Neanderthal and Denisovan genomes.
Explanation:
MicroRNAs (miRNAs) genes encode for RNA regulatory sequences capable of modulating gene expression patterns, thereby they play critical roles in evolution and development. It has been proposed that these miRNAs might control the expression of TRAPPC9, GRID1, PRDM16, NAV2, SorCS2, CAMTA1, and ASIC genes, which are involved in neurocognitive developmental functions.
You can read this publication about this important issue:
Cserhati et al. (2018). Motifome comparison between modern human, Neanderthal and Denisovan. BMC genomics, 19(1), 472.
Natural selection is an evolutionary mechanism by which
Answer:Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.
A population of lab rats recently escaped into the sewer system of Washington, D.C. A brave researcher sampled this population and estimated the following phenotypic frequencies, which were caused by a single gene with two alleles: E and e. 61% normal eyes (EE) 26% cross-eyed (Ee) 13% blind (ee) a) If this population were to reach a Hardy-Weinberg equilibrium (HWE) in one generation, what would the phenotypic frequencies be in that new HWE generation
Answer:
the population has a Hardy-Weinberg equilibrium
Explanation:
According to the case and the information given, the genotype frequencies are:
EE (p2) = 0.61
Ee (2pq) = 0.26
ee (q2) = 0.13
To obtain the allele frequencies we can perform the following equation
Frequency of E = p = p2 + 1/2 (2pq) = 0.61 + 1/2 (0.26) = 0.61+ 0.13 = 0.74
replacing the data we obtain:
Frequency of e = q = 1- p = 1 - 0.74 = 0.26
Regarding the expected frequencies of the genotype, taking into account that there is a Hardy-Weinberg equilibrium:
EE (p2) = (0.74) 2 = 0.547
Ee (2pq) = 2 × (0.74) (0.26) = 0.384
ee (q2) = (0.26) 2 = 0.067
We know that: (p² + 2pq + q² = 1)
replacing with the obtained data:
0.547 + 0.384 + 0.067 = 0.998 ~ 1
finally we can affirm that the population has a Hardy-Weinberg equilibrium
What a nurse informatics does?
They are field dedicated to delivering high-quality patient care through efficient management of data and technical systems. Using data, an informatics nurse can analyze trends, monitor for any consistent errors, and implement new more efficient systems.
I hope this helps you:)
What explains why populations fluctuate around the carrying capacity?
Answer:
In population ecology: Population fluctuation As stated above, populations rarely grow smoothly up to the carrying capacity and then remain there. Instead, fluctuations in population numbers, abundance, or density from one time step to the next are the norm.
The carrying capacity of an environment is the maximum population size of a biological species that can be sustained in that specific environment, given the food, habitat, water, and other resources available. In population ecology, carrying capacity is defined as the environment's maximal load, which is different from the concept of population equilibrium, which may be far below an environment's carrying capacity. The effect of carrying capacity on population dynamics may be modelled with a logistic function.
The populations fluctuate around its carrying capacity because it is very common even for a stable population to briefly exceed or dip below its carrying capacity.
The size of the population fluctuate due to some environmental factors, presence of predators, competitors etc.
Also reproductive lag time can also cause the population to exceed the carrying capacity temporarily.
What is carrying capacity?The carrying capacity of an environment is the maximum population size of organisms that can be supported by the ecosystem, given the food, mates, shelters and other resources available.
What is reproductive lag time?Reproductive lag time is the time required for birth rate to decline and the death rate to increase in response to resource limits.
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Meiosis reduces the chromosome number by
Answer:
i believe it's half and produces four gamete cells
Explanation:
What makes plants green?
Answer:
Green plants are green because they contain a pigment called chlorophyll.
Explanation:
Answer: A pigment called Chlorophyll
Explanation: chlorophyll absorbs light in the red (long wavelength) and the blue (short wavelength) regions of the visible light spectrum. Green light is not absorbed but reflected, making the plant appear green.
Which of these is most likely to become a carbon film ?
A sea creatures shell
A flowering plant
A tree trunk
Answer:
c- a flowering plant
Explanation:
WILL GIVE BRAINLIEST!!
How does the resulting cell at the end of asexual reproduction compare to the original cell
from the beginning of asexual reproduction?
Why does the human use a large amount of energy when exposed to cold temperature for a long period of time
Answer:
So they won't be exposed to hypothermia.
Explanation:
Hypothermia is when your body's temperature drops. Your body's energy is a way of keeping warm
How long does it take for Earth to make one rotation on its axis? A. 1 day B. 1 month C. 1 hour D. 1 year
Answer- A
Explain- Because in order for the Earth to completly turn around, it takes around 23.8 hrs, which is about 1 day.
Answer:
A. 1 day
Explanation:
It only takes 23 hours, 56 minutes and 4.0916 seconds for the Earth to turn once its axis.
There are two types of cell division the first produces cells that are identical to the original cell the second produces cells that are different from the original cell which type of cell division do you think is responsible for these processes